Yes. At NeurIPS (big AI conference) the vast majority of papers are presented as posters. Getting a paper accepted into the conference proceedings is considered a good achievement, the presentation format doesn't matter so much. Many people prefer going to the poster sessions because the spotlight talks are very short (10 mins) and there are so many attendees that it's difficult to speak to the author. (Though there was serious overcrowding last time because the poster sessions weren't staggered).